Noise reducing ro booster pump

Abstract

The application relates to a noise reduction RO booster pump, which comprises a pump cover and a control body water outlet structure installed at the bottom of the pump cover, the control body water outlet structure comprising a control body; the inside of the pump cover is provided with a separation convex ring vertically sealed against the control body, a high-pressure cavity located inside the separation convex ring and a low-pressure cavity located outside the separation convex ring being formed between the pump cover and the control body; the pump cover is provided with a separation structure in the high-pressure cavity, the separation structure comprising a separation partition plate; the separation partition plate separates the high-pressure cavity into a first high-pressure cavity and a second high-pressure cavity located at the top of the first high-pressure cavity and communicating with the first high-pressure cavity, the first high-pressure cavity being located inside the low-pressure cavity and surrounded by the low-pressure cavity; and a noise reduction pad with elasticity is sealingly installed at the top of the second high-pressure cavity. The application has the effect of reducing the noise generated when the RO booster pump operates.

Description

Technical Field

[0001] This application relates to the field of water purifier booster pump technology, and in particular to a noise-reducing RO booster pump. Background Technology

[0002] An RO booster pump is a type of DC diaphragm booster pump. It has self-priming and boosting functions and is one of the key components of an RO water purifier.

[0003] Chinese utility model patent CN217898138U discloses a noise-reducing RO booster pump. The pump includes a pump cover and a control body outlet structure mounted at the bottom of the pump cover. The control body outlet structure includes a control body with multiple independent water-pumping chambers on its lower side. Each water-pumping chamber has an inlet and an outlet at its top. The pump cover has a partition ring that seals against a control bracket. A high-pressure chamber is formed between the pump cover and the control bracket, located inside the partition ring and a low-pressure chamber is located outside the partition ring. The pump cover has an inlet channel communicating with the low-pressure chamber and an outlet channel communicating with the high-pressure chamber.

[0004] Regarding the aforementioned technologies, during the operation of the RO booster pump, water in the low-pressure chamber is drawn into the pumping chamber and then pumped into the high-pressure chamber through the drive mechanism. The pumped high-pressure water impacts the top of the pump cover and the inner wall of the high-pressure chamber. Since the pump cover is made of hard plastic, the impact of the high-pressure water on the pump cover will generate noise. Utility Model Content

[0005] In order to reduce the noise generated during the operation of the RO booster pump, this application provides a noise-reducing RO booster pump.

[0006] The noise-reducing RO booster pump provided in this application adopts the following technical solution: A noise-reducing RO booster pump includes a pump cover and a control body outlet structure installed at the bottom of the pump cover. The control body outlet structure includes a control body. The pump cover has a partition ring inside that vertically seals against the control body. A high-pressure chamber located inside the partition ring and a low-pressure chamber located outside the partition ring are formed between the pump cover and the control body. The pump cover has a partition structure in the high-pressure chamber, the partition structure including a partition plate. The partition plate divides the high-pressure chamber into a first high-pressure chamber and a second high-pressure chamber located at the top of the first high-pressure chamber and communicating with the first high-pressure chamber. The first high-pressure chamber is located inside the low-pressure chamber and is surrounded by the low-pressure chamber. An elastic noise-reducing pad is sealed and installed on the top of the second high-pressure chamber of the pump cover.

[0007] By adopting the above technical solution, the partition plate divides the high-pressure chamber into a first high-pressure chamber and a second high-pressure chamber, with the first high-pressure chamber surrounded by a low-pressure chamber. When the RO booster pump is running, the high-pressure water ejected by the control unit's outlet structure first enters the first high-pressure chamber. The noise generated by the high-pressure water impacting the sidewall of the partition ring is absorbed and weakened by the water in the low-pressure chamber. Installing an elastic noise-reducing pad on the top of the second high-pressure chamber reduces the direct impact of high-pressure water on the top sidewall of the second high-pressure chamber. The noise-reducing pad absorbs and buffers the vibration and noise generated by the water flow, thereby reducing the noise generated by the RO booster pump during operation.

[0008] Optionally, the inner wall of the second high-pressure chamber has a stepped water-blocking surface, the stepped water-blocking surface including a first bottom surface and a second side surface connected to one side of the first bottom surface, the second side surface being located inside the low-pressure chamber and surrounded by the low-pressure chamber.

[0009] By adopting the above technical solution, when the RO booster pump is running, the first side will initially buffer the high-pressure water impacting the second high-pressure chamber, reducing the direct impact of the high-pressure water on the inner wall of the second high-pressure chamber, and further reducing the noise generated by the impact of the high-pressure water. At the same time, by using the low-pressure chamber to surround the second side, the noise generated by the impact of the high-pressure water on the first side can be reduced, which can enhance the noise reduction effect.

[0010] Optionally, the noise reduction pad includes a noise reduction pad and a plurality of support columns arranged on the top of the noise reduction pad. A sealing top cover for covering the noise reduction pad is installed on the top of the pump cover. A noise reduction air cavity is formed between the noise reduction pad and the sealing top cover. The support columns are located in the noise reduction air cavity and abut against the bottom surface of the sealing top cover.

[0011] By adopting the above technical solution, when high-pressure water impacts the noise-reducing pad on the top of the pump cover, the noise-reducing air cavity formed between the noise-reducing pad and the sealing top cover can absorb the noise generated by the high-pressure water impact. Multiple support columns arranged on the top of the noise-reducing pad and abutting against the bottom surface of the sealing top cover can enhance the stability of the noise-reducing pad structure and ensure the noise reduction effect.

[0012] Optionally, the support column is frustum-shaped, and the radial length of the support column gradually increases from top to bottom.

[0013] By adopting the above technical solution, the frustum-shaped support column can better support the noise reduction air cavity. When high-pressure water impacts the noise reduction pad, the frustum-shaped support column can avoid stress concentration, transforming local high stress into compressive stress evenly distributed along the cone surface, reducing the probability of plastic deformation and enhancing the stability of the noise reduction pad.

[0014] Optionally, the pump cover has an installation ring groove at the top of the second high-pressure chamber, and the noise reduction pad has an installation part that is misaligned and fitted with the installation ring groove.

[0015] By adopting the above technical solution, the pump cover and the noise reduction gasket are fitted together by the installation ring groove and the installation part in a staggered manner to achieve a sealed installation of the noise reduction gasket, ensuring the installation stability of the noise reduction gasket at the top of the second high pressure chamber, thereby ensuring the sealing of the noise reduction air chamber and enhancing the noise reduction effect.

[0016] Optionally, the outer wall of the pump cover includes an inner side plate that is sealed to the control body, an outer side plate located outside the inner side plate and sealed to the control body, and a rib structure connecting the inner side plate and the outer side plate; a noise reduction cavity is formed between the inner side plate and the outer side plate.

[0017] By adopting the above technical solution, the inner and outer plates of the pump cover are sealed together with the control body, ensuring the sealing of the connection between the pump cover and the control body; the rib structure between the two plays a connecting and supporting role; the noise reduction cavity formed between the inner and outer plates can further absorb the noise generated by the high-pressure water impact on the pump cover, reducing the noise generated by the pump cover during operation.

[0018] Optionally, the rib structure includes a first rib structure, which is a support rib, and the support rib abuts against the top surface of the control body.

[0019] By adopting the above technical solution, the supporting ribs in the rib plate structure abut against the top surface of the control body, which can enhance the connection stability between the pump cover and the control body.

[0020] Optionally, the control body has multiple independent water-spraying chambers on its lower side, a water outlet valve is installed on the top of the control body, the control body has an arrangement groove on its top and an elastic buffer is provided in the arrangement groove, the bottom of the arrangement groove has a first drain hole communicating with the water-spraying chamber, and the elastic buffer has a second drain hole communicating with the first drain hole; the water outlet valve includes a mounting valve rod that cooperates with the control body and a water outlet valve plate for covering the second drain hole; the top surface of the elastic buffer is an arc-shaped concave surface, and when the water outlet valve is installed on the control body, the bottom surface of the water outlet valve plate is in contact with the bottom surface of the arc-shaped concave surface and has elastic deformation.

[0021] By adopting the above technical solution, an elastic buffer is installed in the groove at the top of the control body. This buffer can cushion the impact force of the water outlet valve plate rebounding and reduce the impact noise between the water outlet valve plate and the control body. The first and second drain holes are connected to the water pumping chamber, allowing water to drain smoothly. The water outlet valve plate covers the second drain hole to control the water discharge and prevent backflow. The top surface of the elastic buffer is an arc-shaped concave surface. When the water outlet valve is installed at the top of the control body, the bottom surface of the water outlet valve plate can fit against the bottom surface of the arc-shaped concave surface and generate elastic deformation, making the water outlet valve plate and the elastic buffer fit more tightly, enhancing the sealing effect, and reducing the possibility of water backflow into the water pumping chamber.

[0022] Optionally, the bottom of the partition plate is provided with a pressing part for pressing the water outlet valve, and the pressing part is provided with a pressing protrusion corresponding to the water pumping chamber.

[0023] By adopting the above technical solution, the pressing part and pressing protrusion at the bottom of the partition can press the water outlet valve, ensuring the stable installation of the water outlet valve, preventing it from loosening and shifting during operation, ensuring the normal operation of the booster pump, and enhancing the stability of the entire control body's water outlet structure.

[0024] Optionally, the pump cover is sealed with an abutment gasket on the upper side of the partition plate, and the bottom surface of the abutment gasket abuts against the top surface of the partition plate; a pressure relief assembly is installed on the top of the pump cover on one side of the second high-pressure chamber, the pressure relief assembly includes a pressure relief top cover and a pressure relief elastic element installed at the bottom of the pressure relief top cover, and the bottom of the pressure relief elastic element abuts against the top of the abutment gasket.

[0025] By adopting the above technical solution, a pressure relief assembly including a pressure relief top cover and a pressure relief elastic element is installed on the top of the pump cover on the side of the second high-pressure chamber, and the bottom of the pressure relief elastic element abuts against the top of the abutment pad. This can realize the pressure relief function of the booster pump, reduce the probability of damage to the pump body caused by excessive pressure, and at the same time, the entire structure helps to improve the stability and safety of the booster pump, reduce failures and damage caused by abnormal pressure, and achieve noise reduction while ensuring the normal operation of the booster pump.

[0026] In summary, this application includes at least one of the following beneficial technical effects: A noise-reducing RO booster pump divides a high-pressure chamber into a first high-pressure chamber and a second high-pressure chamber. The first high-pressure chamber is surrounded by a low-pressure chamber, which can absorb the noise generated by the initial impact of high-pressure water on the wall. An elastic noise-reducing pad is installed on the top of the second high-pressure chamber to reduce the noise generated by the impact of high-pressure water on the top side wall of the second high-pressure chamber. The inner and outer plates and ribs of the outer wall of the pump cover form a noise-reducing cavity, which can further reduce the noise generated during pump operation. An elastic buffer is installed in the groove at the top of the control body, which can buffer the impact force of the water outlet valve plate rebound and reduce the impact noise between the water outlet valve plate and the control body. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a noise-reducing RO booster pump in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the structure of the pump cover and the working mechanism in the embodiments of this application.

[0029] Figure 3 This is a cross-sectional schematic diagram of the pump cover in an embodiment of this application.

[0030] Figure 4 This is an exploded view of the water outlet structure of the control body in the embodiments of this application.

[0031] Figure 5 This is a partial cross-sectional schematic diagram of the water outlet structure of the control body in the embodiments of this application.

[0032] Figure 6 This is a schematic cross-sectional view of the pressure relief assembly and pump cover in an embodiment of this application.

[0033] Figure 7 This is a schematic diagram of the structure of the abutting protrusion in an embodiment of this application.

[0034] Figure 8 This is a schematic diagram of the bottom structure of the pump cover in an embodiment of this application.

[0035] Figure 9 This is a partial cross-sectional schematic diagram of the second high-pressure chamber in an embodiment of this application.

[0036] Figure 10 This is a schematic cross-sectional view of the noise reduction pad and pump cover in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Pump cover; 11. Inlet; 12. Outlet; 13. Locking part; 141. Inner side plate; 142. Outer side plate; 143. Noise-reducing cavity; 144. Support rib; 145. Mounting groove; 146. Connecting part; 15. Separating ring; 16. High-pressure chamber; 161. First high-pressure chamber; 162. Second high-pressure chamber; 163. Stepped water-retaining surface; 1631. First bottom surface; 1632. Second side surface; 164. Noise-reducing pad; 1641. Noise reduction pad. 1642. Noise-reducing pad; 1643. Support column; 1644. Mounting part; 165. Mounting ring groove; 17. Low-pressure chamber; 18. Partition plate; 181. Connecting part; 1811. Connecting through hole; 182. Pressure relief part; 1821. Abutting protrusion; 183. First pressure relief hole; 184. Pressing part; 1841. Pressing protrusion; 185. Second pressure relief hole; 191. Mounting groove; 192. Pressure relief mounting hole; 193. Abutting pad; 2. Lower housing; 21. Locking part; 3. Working machine 4. Control body; 41. Water chamber; 42. Water inlet; 43. First drain hole; 44. Water inlet valve; 45. Water outlet valve; 451. Mounting valve stem; 4511. Arrangement limiting part; 4512. Locking plug; 452. Water outlet valve plate; 4521. Sealing flap; 4522. Arrangement gap; 4523. Arc-shaped groove; 46. Arrangement slot; 47. Elastic buffer; 471. Polygonal limiting part; 472. Arrangement through hole; 473. Positioning protrusion; 474. First drain hole; 48. Two drainage holes; 49. Polygonal limiting groove; 5. Locking through hole; 6. Pressure relief assembly; 7. Pressure relief top cover; 8. Pressure adjusting screw; 9. Polygonal locking hole; 10. Pressure relief spring cover; 11. First arrangement groove; 12. Buffer cavity; 13. Pressure relief elastic element; 14. First spring cover; 15. Second spring seat; 16. Pressure relief spring; 17. Second arrangement groove; 18. Pressure relief cavity; 19. Sealing top cover; 20. Noise reduction air cavity; 21. Supporting stepped surface. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0039] This application discloses a noise-reducing RO booster pump. (Refer to...) Figure 1 and Figure 2 The noise-reducing RO booster pump includes a pump cover 1, a lower housing 2, a working mechanism 3 installed inside the lower housing, and a control body water outlet structure installed at the bottom of the pump cover 1 and cooperating with the working mechanism 3. The pump cover 1 has an inlet 11 and an outlet 12. A locking part 13 is provided at the bottom edge of the pump cover 1, and a locking screw is installed inside the locking part 13. The lower housing 2 has a locking part 21 that cooperates with the locking screw. In this embodiment, there are six locking parts 13, and the locking parts 21 are arranged in a one-to-one correspondence with the locking parts 13.

[0040] Reference Figure 3 and Figure 4 The control body water outlet structure includes a control body 4. The pump cover 1 has a partition ring 15 that vertically seals against the control body 4. A high-pressure chamber 16 is formed between the pump cover 1 and the control body 4, located inside the partition ring 15 and a low-pressure chamber 17 is located outside the partition ring 15. The inlet 11 is connected to the low-pressure chamber 17, and the outlet 12 is connected to the high-pressure chamber 16. In this embodiment, a sealing ring is provided at the contact portion between the partition ring 15 and the control body 4.

[0041] Reference Figure 3 and Figure 4 The lower part of the control body 4 is provided with multiple independent water-spraying chambers 41. Each water-spraying chamber 41 has a water inlet 42 and a first drain 43 at its top, wherein the water inlet 42 is connected to the low-pressure chamber 17, and the first drain 43 is connected to the high-pressure chamber 16. In this embodiment, both the pump cover 1 and the control body 4 are made of rigid plastic, and the partition ring 15 and the pump cover 1 are integrally formed. There are a total of five water-spraying chambers 41, which are evenly distributed around the central axis of the control body 4, forming a five-petal flower-shaped structure.

[0042] Reference Figure 3 and Figure 4 The control body 4 has an inlet valve 44 installed on the top inner side of each water-spraying chamber 41 for opening and closing the corresponding water inlet hole 42; an outlet valve 45 is also installed on the top of the control body 4. An arrangement groove 46 is provided on the top of the control body 4, and an elastic buffer 47 is provided inside the groove. A first drain hole 43 is opened on the bottom surface of the arrangement groove 46, and a second drain hole 474 communicating with the first drain hole 43 is correspondingly opened on the elastic buffer 47. In this embodiment, each water-spraying chamber 41 is provided with five drain holes, arranged in two parallel rows. The second drain hole 474 corresponds one-to-one with the first drain hole 43 in position and number, and both the first drain hole 43 and the second drain hole 474 are circular through-hole structures.

[0043] Reference Figure 3 and Figure 4 The water outlet valve 45 includes a mounting valve stem 451 and a water outlet valve plate 452. The mounting valve stem 451 is installed in conjunction with the control body 4, and the water outlet valve plate 452 is used to cover the second drain hole 474. The water outlet valve plate 452 has a closing flap 4521 corresponding to the water pumping chamber 41. The closing flap 4521 is fan-shaped, and its thickness gradually decreases radially from the inside to the outside. An arrangement gap 4522 is formed between adjacent closing flaps 4521. In this embodiment, the water outlet valve 45 is made of elastic material, and the mounting valve stem 451 and the water outlet valve plate 452 are an integrated structure.

[0044] Reference Figure 3 and Figure 4 The control body 4 has a polygonal limiting groove 48 at the bottom of the arrangement groove 46. A polygonal limiting part 471 is correspondingly provided at the bottom of the elastic buffer 47, and this polygonal limiting part 471 cooperates with the polygonal limiting groove 48. In this embodiment, the elastic buffer 47 is made of rubber material, and the polygonal limiting part 471 and the elastic buffer 47 are integrally formed. Through the cooperation of the polygonal limiting part 471 and the polygonal limiting groove 48, the circumferential rotation and radial movement of the elastic buffer 47 within the control body 4 can be effectively restricted, thereby ensuring that it maintains a stable position when subjected to high-pressure water flow impact, reducing the possibility of displacement.

[0045] Reference Figure 3 and Figure 4 The elastic buffer 47 has an arrangement through hole 472, which is a polygonal limiting hole used to cooperate with the arrangement limiting part 4511 on the mounting valve stem 451. The control body 4 has a locking through hole 49 at the bottom of the polygonal limiting groove 48, and a locking plug 4512 is provided at the end of the mounting valve stem 451. The locking plug 4512 and the lower outer edge of the locking through hole 49 form a plug-in cooperation, thereby realizing the axial positioning and fixation of the mounting valve stem 451 on the control body 4.

[0046] Reference Figure 3 and Figure 4 The top surface of the elastic buffer 47 is an arc-shaped concave structure. When the outlet valve 45 is installed on the top of the elastic buffer 47, the bottom surface of the closing flap 4521 fits against the arc-shaped concave surface and undergoes elastic deformation, thereby forming a tight fit between the outlet valve 452 and the elastic buffer 47. A positioning protrusion 473 is also provided at the outer edge of the top of the elastic buffer 47. The number of positioning protrusions 473 is consistent with the number of gaps 4522 arranged on the outlet valve 452, and they are respectively embedded in each gap 4522. In this embodiment, the positioning protrusions 473 and the elastic buffer 47 are integrally formed.

[0047] Reference Figure 3 and Figure 5The pump cover 1 has a partition structure within the high-pressure chamber 16. This partition structure includes a partition plate 18 with a circular cross-section. The sidewall of the partition plate 18 abuts against the inner sidewall of the partition ring 15. The partition plate 18 divides the high-pressure chamber 16 into a first high-pressure chamber 161 and a second high-pressure chamber 162. The second high-pressure chamber 162 is located at the top of the first high-pressure chamber 161 and communicates with it. The first high-pressure chamber 161 is located inside and surrounded by the low-pressure chamber 17. In this embodiment, the first high-pressure chamber 161 is an annular chamber. When the RO booster pump is running, the water in the pumping chamber impacts the outlet valve plate 452, causing it to overcome its elasticity and be pushed up. The high-pressure water flows into the first high-pressure chamber 161 through the first drain hole 43 and the second drain hole 474. Since the high-pressure chamber is located inside and surrounded by the low-pressure chamber 17, the low-pressure chamber 17 surrounding the outside of the first high-pressure chamber 161 can initially absorb the noise generated by the high-pressure water impacting the wall, thus initially reducing the noise generated by the RO booster pump during operation. The partition plate 18 includes a connecting part 181 and a pressure relief part 182. The connecting part 181 has a connecting through hole 1811 for connecting the first high-pressure chamber 161 and the second high-pressure chamber 162.

[0048] Reference Figure 5 and Figure 6 When high-pressure water rushes into the first high-pressure chamber 161 from the pumping chamber 41, the high-pressure water will impact the bottom surface of the partition plate 18. In order to reduce the probability of damage to the pump body caused by excessive pressure, a pressure relief component 5 is installed on the top of the pump cover 1 on one side of the second high-pressure chamber 162. The pump cover 1 has a mounting groove 191 in the high-pressure chamber 16 for mounting the pressure relief component 5. The bottom of the mounting groove 191 has a first pressure relief hole 183 communicating with the first high-pressure chamber 161 and a second pressure relief hole 185 communicating with the low-pressure chamber 17. The bottom surface of the mounting groove 191 is also provided with an abutment protrusion 1821.

[0049] Reference Figure 6 and Figure 7 The bottom of the mounting groove 191 is provided with a pressure relief mounting hole 192, and an abutment gasket 193 is sealed and installed in the pressure relief mounting hole 192. The abutment gasket 193 and the bottom of the mounting groove 191 form a pressure relief cavity 53, and the bottom surface of the abutment gasket 193 abuts against the abutment protrusion 1821.

[0050] Reference Figure 5 and Figure 6The pressure relief assembly 5 includes a pressure relief top cover 51 and a pressure relief elastic element 52 installed at the bottom of the pressure relief top cover 51. An adjusting screw 511 is installed on the pressure relief top cover 51, with its bottom end penetrating through the cover. A polygonal locking hole 512 is formed on its top surface for easy adjustment using tools. A pressure relief spring cover 513 is provided at the bottom of the pressure relief top cover 513, with a first arrangement groove 5131 at its bottom. A buffer cavity 5132 is formed between the pressure relief spring cover 513 and the abutment pad 193.

[0051] Reference Figure 5 and Figure 6 The pressure relief elastic element 52 includes a first spring cover 521, a second spring seat 522, and a pressure relief spring 523 disposed between the first spring cover 521 and the second spring cover, which always tends to close the first pressure relief hole 183. The first spring cover 521 is installed in a first arrangement groove 5131, and the top of the second spring seat 522 has a second arrangement groove 5231 for accommodating the pressure relief spring 523. In this embodiment, the pressure relief top cover 51 is fixed to the mounting groove 191 on the top of the pump cover 1 by bolts. The longitudinal section of the first spring cover 521 is T-shaped, with the horizontal portion of the first spring cover 521 abutting against the bottom surface of the pressure adjusting screw 511, and its circumferential wall abutting against the inner wall of the first arrangement groove 5131. The pressure relief spring 523 is sleeved on the vertical portion of the first spring cover 521.

[0052] Reference Figure 5 and Figure 6 When high-pressure water enters the first high-pressure chamber 161, its impact force acts on the bottom of the partition plate 18; the high-pressure water impacts the bottom of the abutment pad 193 upward through the first pressure relief hole 183. When the water pressure exceeds the set threshold, the abutment pad 193 is pushed open upward, and the high-pressure water enters the pressure relief chamber 53, and then flows back to the low-pressure chamber 17 through the second pressure relief hole 185, thereby realizing the overpressure relief and pressure balance of the system.

[0053] Reference Figure 5 and Figure 8 The bottom of the partition plate 18 is also provided with a pressing part 184 for pressing the water outlet valve 45. The pressing part 184 is provided with a pressing protrusion 1841 corresponding to the water pumping chamber 41. The central area of ​​the water outlet valve plate 452 has an arc-shaped groove 4523. The pressing protrusion 1841 is pressed against the bottom of the arc-shaped groove 4523 to ensure that the water outlet valve plate 452 will not loosen or shift when high-pressure water impacts it.

[0054] Reference Figure 3 and Figure 9The inner wall of the second high-pressure chamber 162 has a stepped water-retaining surface 163. The stepped water-retaining surface 163 includes a first bottom surface 1631 and a second side surface 1632 connected to one side of the first bottom surface 1631. The second side surface 1632 is located inside the low-pressure chamber 17 and is surrounded by the low-pressure chamber 17. In this embodiment, the angle formed between the first bottom surface 1631 and the second side surface 1632 is 90 degrees. When the RO booster pump is running, the second side surface 1632 will initially buffer the high-pressure water impacting into the second high-pressure chamber 162, reducing the direct impact of the high-pressure water on the inner wall of the second high-pressure chamber 162, and further reducing the noise generated by the impact of the high-pressure water. At the same time, the low-pressure chamber 17 surrounds the second side surface 1632, and the low-pressure chamber 17 reduces the noise generated by the impact of the high-pressure water on the first side surface.

[0055] Reference Figure 9 and Figure 10 A resilient noise-reducing pad 164 is sealed and installed on the top of the second high-pressure chamber 162 of the pump cover 1. The shape of the noise-reducing pad 164 is adapted to the shape of the cavity of the second high-pressure chamber 162. The noise-reducing pad 164 includes a noise-reducing pad 1641 and a plurality of support columns 1642 arranged on the top of the noise-reducing pad 1641. The noise-reducing pad 1641 is a concave pad. A sealing top cover 6 is installed on the top of the pump cover 1 to cover the noise-reducing pad 164, and a noise-reducing air cavity 7 is formed between the noise-reducing pad 1641 and the sealing top cover 6. When high-pressure water impacts the noise-reducing pad 164 on the top of the pump cover 1, the noise-reducing air cavity 7 can absorb the noise generated by the high-pressure water impact. In this embodiment, the sealing top cover 6 is bolted to the top of the pump cover 1. The noise reduction pad 164 is made of elastic materials such as rubber and silicone. The noise reduction pad 1641 and the support column 1642 are integrally set. Multiple support columns are evenly arranged in the noise reduction air cavity 7 and abut against the bottom surface of the sealing top cover 6.

[0056] Reference Figure 10 The support column 1642 is truncated cone-shaped, and its radial length gradually increases from top to bottom. When high-pressure water impacts the noise reduction pad 164, the truncated cone-shaped support column 1642 can avoid stress concentration, transforming local high stress into compressive stress evenly distributed along the cone surface, reducing the probability of plastic deformation and enhancing the stability of the noise reduction pad 164.

[0057] Reference Figure 10 The pump cover 1 also has a mounting ring groove 165 on the top of the second high-pressure chamber 162, and the noise reduction pad 164 has a mounting part 1643 that is misaligned and fitted with the mounting ring groove 165. A sealing ring is provided in the mounting ring groove 165 for sealing after assembly.

[0058] Reference Figure 3 and Figure 8The outer wall of the pump cover 1 includes an inner side plate 141 that is sealed to the control body 4, an outer side plate 142 located outside the inner side plate 141 and sealed to the control body 4, and a rib structure connecting the inner side plate 141 and the outer side plate 142. A noise reduction cavity 143 is formed between the inner side plate 141 and the outer side plate 142. The noise reduction cavity 143 further absorbs the noise generated by the high-pressure water impact on the inner plate of the high-pressure chamber, ensuring the noise reduction effect. In this embodiment, both the inner side plate 141 and the outer side plate 142 have a 5-petal flower-shaped structure.

[0059] Reference Figure 3 and Figure 8 The rib structure includes a first rib structure and a second rib structure. The first rib structure consists of supporting ribs 144. The top of the control body 4 has a supporting stepped surface 8, and the supporting ribs 144 are vertically arranged and abut against the supporting stepped surface 8 of the control body 4. In this embodiment, the supporting ribs 144 are square ribs, and the number of supporting ribs 144 is 10.

[0060] Reference Figure 2 and Figure 8 The outer wall of the outer side plate 142 of the pump cover 1 has a mounting groove 145 that corresponds one-to-one with the locking part 13. The second rib structure is a connecting part 146 formed between the outer side plate 142 and the inner side plate 141 at a position where the concave surfaces of each mounting groove 191 part 145 face away from each other.

[0061] Combination Figures 1 to 10 The implementation principle of a noise-reducing RO booster pump in this application embodiment is as follows: When the RO booster pump is running, water enters the low-pressure chamber 17 through the inlet 11. Under the operation of the working mechanism 3, when the space of the water pumping chamber 41 increases, the water in the low-pressure chamber 17 is drawn into the water pumping chamber 41. Due to the setting of the inlet valve plate, the water entering the water pumping chamber 41 will not flow back. When the space volume of the water pumping chamber 41 decreases, the water in the water pumping chamber 41 is impacted out through the first drain hole 43 and the second drain hole 474. When the water in the water pumping chamber impacts the outlet valve plate 452, the closing flap 4521 of the outlet valve plate 452 is pushed up against the elastic force. When the closing flap 4521 rebounds, it strikes the elastic buffer 47, which buffers the impact force of the rebound of the outlet valve plate 452 and avoids the closing flap 4521 directly hitting the control body 4, thus reducing the generation of noise.

[0062] When high-pressure water flows into the first high-pressure chamber 161 through the first drain hole 43 and the second drain hole 474, since the high-pressure chamber is located inside the low-pressure chamber 17 and is surrounded by the low-pressure chamber 17, the low-pressure chamber 17 surrounding the outside of the first high-pressure chamber 161 can initially absorb the noise generated by the high-pressure water impacting the wall, and initially reduce the noise generated by the RO booster pump during operation.

[0063] During the process of high-pressure water entering the second high-pressure chamber 162 from the first high-pressure chamber 161, the first side provides initial buffering for the high-pressure water impacting the second high-pressure chamber 162, reducing the direct impact of the high-pressure water on the inner wall of the second high-pressure chamber 162, and further reducing the noise generated by the impact of the high-pressure water. At the same time, the low-pressure chamber 17 surrounds the second side 1632, reducing the noise generated by the impact of the high-pressure water on the first side. Furthermore, the noise-reducing pad 164 at the top of the second high-pressure chamber 162 can buffer the impact force of the high-pressure water, and the noise-reducing air cavity 7 formed between the noise-reducing pad 1641 of the noise-reducing pad 164 and the sealing top cover 6 can absorb the noise generated during the impact of the high-pressure water. The noise-reducing cavity 143 formed between the inner side plate 141 and the outer side plate 142 can further absorb the noise generated by the impact of the high-pressure water, reducing the noise generated by the pump cover 1 during operation.

[0064] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A noise-reducing RO booster pump, characterized in that, The system includes a pump cover (1) and a control body (4) installed at the bottom of the pump cover (1) to form a water outlet structure. The control body (4) includes a control body (4). The pump cover (1) has a partition ring (15) inside that vertically seals against the control body (4). A high-pressure chamber (16) located inside the partition ring (15) and a low-pressure chamber (17) located outside the partition ring (15) are formed between the pump cover (1) and the control body (4). The pump cover (1) has a partition in the high-pressure chamber (16). The structure includes a partition (18); the partition (18) divides the high-pressure chamber (16) into a first high-pressure chamber (161) and a second high-pressure chamber (162) located on top of the first high-pressure chamber (161) and communicating with the first high-pressure chamber (161), the first high-pressure chamber (161) being located inside the low-pressure chamber (17) and surrounded by the low-pressure chamber (17); the pump cover (1) is sealed with an elastic noise-reducing pad (164) on the top of the second high-pressure chamber (162).

2. The noise-reducing RO booster pump according to claim 1, characterized in that, The inner wall of the second high-pressure chamber (162) has a stepped water-blocking surface (163), which includes a first bottom surface (1631) and a second side surface (1632) connected to one side of the first bottom surface (1631). The second side surface (1632) is located inside the low-pressure chamber (17) and is surrounded by the low-pressure chamber (17).

3. The noise-reducing RO booster pump according to claim 1, characterized in that, The noise reduction pad (164) includes a noise reduction pad (164) sheet and a plurality of support columns (1642) arranged on the top of the noise reduction pad (164) sheet. The top of the pump cover (1) is equipped with a sealing top cover (6) for covering the noise reduction pad (164). A noise reduction air cavity (7) is formed between the noise reduction pad (164) sheet and the sealing top cover (6). The support columns (1642) are located in the noise reduction air cavity (7) and abut against the bottom surface of the sealing top cover (6).

4. The noise-reducing RO booster pump according to claim 3, characterized in that, The support column (1642) is frustoconical, and the radial length of the support column (1642) gradually increases from top to bottom.

5. A noise-reducing RO booster pump according to claim 3, characterized in that, The pump cover (1) has an installation ring groove (165) on the top of the second high pressure chamber (162), and the noise reduction pad (164) has an installation part (1643) that is misaligned and fitted with the installation ring groove (165).

6. The noise-reducing RO booster pump according to claim 1, characterized in that, The outer wall of the pump cover (1) includes an inner side plate (141) that is sealed to the control body (4), an outer side plate (142) located outside the inner side plate (141) and sealed to the control body (4), and a rib structure connecting the inner side plate (141) and the outer side plate (142); a noise reduction cavity (143) is formed between the inner side plate (141) and the outer side plate (142).

7. A noise-reducing RO booster pump according to claim 6, characterized in that, The rib structure includes a first rib structure, which is a support rib (144) that abuts against the top surface of the control body (4).

8. A noise-reducing RO booster pump according to claim 1, characterized in that, The control body (4) has multiple independent water-spraying chambers (41) on its lower side. A water outlet valve (45) is installed on the top of the control body (4). The control body (4) has an arrangement groove (46) on its top and an elastic buffer (47) is provided in the arrangement groove (46). A first drain hole (43) communicating with the water-spraying chamber (41) is provided at the bottom of the arrangement groove (46). A second drain hole (474) communicating with the first drain hole (43) is provided in the elastic buffer (47). The water outlet valve (45) includes a mounting valve stem (451) that cooperates with the control body (4) and a water outlet valve plate (452) for covering the second drain hole (474). The elastic buffer (47) has an arrangement through hole (472) that cooperates with the mounting valve stem (451).

9. A noise-reducing RO booster pump according to claim 8, characterized in that, The bottom of the partition plate (18) is provided with a pressing part (184) for pressing the water outlet valve (45), and the pressing part (184) is provided with a pressing protrusion (1841) corresponding to the water pumping chamber (41).

10. A noise-reducing RO booster pump according to claim 1, characterized in that, The pump cover (1) is sealed with an abutment gasket (193) on the upper side of the partition plate (18), and the bottom surface of the abutment gasket (193) abuts against the top surface of the partition plate (18); a pressure relief assembly (5) is installed on the top of the pump cover (1) on one side of the second high pressure chamber (162), and the pressure relief assembly (5) includes a pressure relief top cover (51) and a pressure relief elastic element (52) installed at the bottom of the pressure relief top cover (51), and the bottom of the pressure relief elastic element (52) abuts against the top of the abutment gasket (193).

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